Re: [dpdk-dev] [PATCH v7 7/7] vhost: convert inflight data to DPDK allocation API

["Xia, Chenbo" <chenbo.xia@intel.com>]

> -----Original Message-----
> From: Maxime Coquelin <maxime.coquelin@redhat.com>
> Sent: Wednesday, June 30, 2021 12:12 AM
> To: dev@dpdk.org; Xia, Chenbo <chenbo.xia@intel.com>;
> david.marchand@redhat.com
> Cc: Maxime Coquelin <maxime.coquelin@redhat.com>
> Subject: [PATCH v7 7/7] vhost: convert inflight data to DPDK allocation API
> 
> Inflight metadata are allocated using glibc's calloc.
> This patch converts them to rte_zmalloc_socket to take
> care of the NUMA affinity.
> 
> Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
> ---
>  lib/vhost/vhost.c      |  4 +--
>  lib/vhost/vhost_user.c | 71 ++++++++++++++++++++++++++++++++++--------
>  2 files changed, 60 insertions(+), 15 deletions(-)
> 
> diff --git a/lib/vhost/vhost.c b/lib/vhost/vhost.c
> index 0000cd3297..53a470f547 100644
> --- a/lib/vhost/vhost.c
> +++ b/lib/vhost/vhost.c
> @@ -312,10 +312,10 @@ cleanup_vq_inflight(struct virtio_net *dev, struct
> vhost_virtqueue *vq)
> 
>  	if (vq->resubmit_inflight) {
>  		if (vq->resubmit_inflight->resubmit_list) {
> -			free(vq->resubmit_inflight->resubmit_list);
> +			rte_free(vq->resubmit_inflight->resubmit_list);
>  			vq->resubmit_inflight->resubmit_list = NULL;
>  		}
> -		free(vq->resubmit_inflight);
> +		rte_free(vq->resubmit_inflight);
>  		vq->resubmit_inflight = NULL;
>  	}
>  }
> diff --git a/lib/vhost/vhost_user.c b/lib/vhost/vhost_user.c
> index d8ec087dfc..67935c4ccc 100644
> --- a/lib/vhost/vhost_user.c
> +++ b/lib/vhost/vhost_user.c
> @@ -188,7 +188,7 @@ vhost_backend_cleanup(struct virtio_net *dev)
>  			dev->inflight_info->fd = -1;
>  		}
> 
> -		free(dev->inflight_info);
> +		rte_free(dev->inflight_info);
>  		dev->inflight_info = NULL;
>  	}
> 
> @@ -562,6 +562,31 @@ numa_realloc(struct virtio_net *dev, int index)
>  		vq->log_cache = lc;
>  	}
> 
> +	if (vq->resubmit_inflight) {
> +		struct rte_vhost_resubmit_info *ri;
> +
> +		ri = rte_realloc_socket(vq->resubmit_inflight, sizeof(*ri), 0,
> node);
> +		if (!ri) {
> +			VHOST_LOG_CONFIG(ERR, "Failed to realloc resubmit inflight
> on node %d\n",
> +					node);
> +			return dev;
> +		}
> +		vq->resubmit_inflight = ri;
> +
> +		if (ri->resubmit_list) {
> +			struct rte_vhost_resubmit_desc *rd;
> +
> +			rd = rte_realloc_socket(ri->resubmit_list, sizeof(*rd) * ri-
> >resubmit_num,
> +					0, node);
> +			if (!rd) {
> +				VHOST_LOG_CONFIG(ERR, "Failed to realloc resubmit list
> on node %d\n",
> +						node);
> +				return dev;
> +			}
> +			ri->resubmit_list = rd;
> +		}
> +	}
> +
>  	vq->numa_node = node;
> 
>  out_dev_realloc:
> @@ -1491,6 +1516,7 @@ vhost_user_get_inflight_fd(struct virtio_net **pdev,
>  	uint16_t num_queues, queue_size;
>  	struct virtio_net *dev = *pdev;
>  	int fd, i, j;
> +	int numa_node = SOCKET_ID_ANY;
>  	void *addr;
> 
>  	if (msg->size != sizeof(msg->payload.inflight)) {
> @@ -1500,9 +1526,16 @@ vhost_user_get_inflight_fd(struct virtio_net **pdev,
>  		return RTE_VHOST_MSG_RESULT_ERR;
>  	}
> 
> +	/*
> +	 * If VQ 0 has already been allocated, try to allocate on the same
> +	 * NUMA node. It can be reallocated later in numa_realloc().
> +	 */
> +	if (dev->nr_vring > 0)
> +		numa_node = dev->virtqueue[0]->numa_node;
> +
>  	if (dev->inflight_info == NULL) {
> -		dev->inflight_info = calloc(1,
> -					    sizeof(struct inflight_mem_info));
> +		dev->inflight_info = rte_zmalloc_socket("inflight_info",
> +				sizeof(struct inflight_mem_info), 0, numa_node);
>  		if (!dev->inflight_info) {
>  			VHOST_LOG_CONFIG(ERR,
>  				"failed to alloc dev inflight area\n");
> @@ -1585,6 +1618,7 @@ vhost_user_set_inflight_fd(struct virtio_net **pdev,
> VhostUserMsg *msg,
>  	struct vhost_virtqueue *vq;
>  	void *addr;
>  	int fd, i;
> +	int numa_node = SOCKET_ID_ANY;
> 
>  	fd = msg->fds[0];
>  	if (msg->size != sizeof(msg->payload.inflight) || fd < 0) {
> @@ -1618,9 +1652,16 @@ vhost_user_set_inflight_fd(struct virtio_net **pdev,
> VhostUserMsg *msg,
>  		"set_inflight_fd pervq_inflight_size: %d\n",
>  		pervq_inflight_size);
> 
> +	/*
> +	 * If VQ 0 has already been allocated, try to allocate on the same
> +	 * NUMA node. It can be reallocated later in numa_realloc().
> +	 */
> +	if (dev->nr_vring > 0)
> +		numa_node = dev->virtqueue[0]->numa_node;
> +
>  	if (!dev->inflight_info) {
> -		dev->inflight_info = calloc(1,
> -					    sizeof(struct inflight_mem_info));
> +		dev->inflight_info = rte_zmalloc_socket("inflight_info",
> +				sizeof(struct inflight_mem_info), 0, numa_node);
>  		if (dev->inflight_info == NULL) {
>  			VHOST_LOG_CONFIG(ERR,
>  				"failed to alloc dev inflight area\n");
> @@ -1779,19 +1820,21 @@ vhost_check_queue_inflights_split(struct virtio_net
> *dev,
>  	vq->last_avail_idx += resubmit_num;
> 
>  	if (resubmit_num) {
> -		resubmit  = calloc(1, sizeof(struct rte_vhost_resubmit_info));
> +		resubmit  = rte_zmalloc_socket("resubmit", sizeof(struct
> rte_vhost_resubmit_info),
> +				0, vq->numa_node);
>  		if (!resubmit) {
>  			VHOST_LOG_CONFIG(ERR,
>  				"failed to allocate memory for resubmit info.\n");
>  			return RTE_VHOST_MSG_RESULT_ERR;
>  		}
> 
> -		resubmit->resubmit_list = calloc(resubmit_num,
> -			sizeof(struct rte_vhost_resubmit_desc));
> +		resubmit->resubmit_list = rte_zmalloc_socket("resubmit_list",
> +				resubmit_num * sizeof(struct rte_vhost_resubmit_desc),
> +				0, vq->numa_node);
>  		if (!resubmit->resubmit_list) {
>  			VHOST_LOG_CONFIG(ERR,
>  				"failed to allocate memory for inflight desc.\n");
> -			free(resubmit);
> +			rte_free(resubmit);
>  			return RTE_VHOST_MSG_RESULT_ERR;
>  		}
> 
> @@ -1873,19 +1916,21 @@ vhost_check_queue_inflights_packed(struct virtio_net
> *dev,
>  	}
> 
>  	if (resubmit_num) {
> -		resubmit = calloc(1, sizeof(struct rte_vhost_resubmit_info));
> +		resubmit  = rte_zmalloc_socket("resubmit", sizeof(struct
> rte_vhost_resubmit_info),
> +				0, vq->numa_node);
>  		if (resubmit == NULL) {
>  			VHOST_LOG_CONFIG(ERR,
>  				"failed to allocate memory for resubmit info.\n");
>  			return RTE_VHOST_MSG_RESULT_ERR;
>  		}
> 
> -		resubmit->resubmit_list = calloc(resubmit_num,
> -			sizeof(struct rte_vhost_resubmit_desc));
> +		resubmit->resubmit_list = rte_zmalloc_socket("resubmit_list",
> +				resubmit_num * sizeof(struct rte_vhost_resubmit_desc),
> +				0, vq->numa_node);
>  		if (resubmit->resubmit_list == NULL) {
>  			VHOST_LOG_CONFIG(ERR,
>  				"failed to allocate memory for resubmit desc.\n");
> -			free(resubmit);
> +			rte_free(resubmit);
>  			return RTE_VHOST_MSG_RESULT_ERR;
>  		}
> 
> --
> 2.31.1

Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>